Browsing Optometry and Vision Science by Title
Now showing items 114-133 of 242
-
In vitro analysis of wettability and physical properties of blister pack solutions of hydrogel contact lenses
(University of Waterloo, 2010-04-30)Contact lens success is primarily driven by comfort of the lens in eye. Over the years, many modifications have been made to the lens surface and bulk material to improve comfort of the lens, however 50% of contact lens ... -
In vitro and ex vivo wettability of hydrogel contact lenses
(University of Waterloo, 2006)The wettability of contact lenses has become an area of intense research, with the belief that the more "hydrophilic" or wettable the lens surface is, the more comfortable the lens may be, as the posterior surface of the ... -
In Vitro and In Vivo Evaluation of Novel Ciprofloxacin-Releasing Silicone Hydrogel Contact Lenses
(Association for Research in Vision and Ophthalmology, 2014-08-08)Purpose.: The purpose of this study was to evaluate ciprofloxacin-releasing silicone hydrogel contact lens materials in vitro and in vivo for the treatment of microbial keratitis. Methods.: Model silicone hydrogel contact ... -
In Vitro Competitive Binding of Major Tear Proteins to Contact Lenses
(University of Waterloo, 2013-09-27)Purpose To study the impact of incubation solution complexity on protein deposition to silicone hydrogel (SH) contact lenses and the effect of contact lens cleaning solutions on protein activity and removal. Methods The ... -
In Vitro Release of Inflammatory Cytokines from Contact Lens Materials
(University of Waterloo, 2020-12-22)The upregulation of inflammatory mediators in the tear film during contact lens wear indicates that lens wear may induce an inflammatory response on the ocular surface. Previous research has investigated the relationship ... -
In vitro ultraviolet–induced damage in human corneal, lens, and retinal pigment epithelial cells
(Molecular Vision, 2011-01-21)Purpose: The purpose was to develop suitable in vitro methods to detect ocular epithelial cell damage when exposed to UV radiation, in an effort to evaluate UV-absorbing ophthalmic biomaterials.Methods: Human corneal ... -
In Vivo Imaging of Corneal Conditions using Optical Coherence Tomography
(University of Waterloo, 2006)Purposes: To use optical coherence tomography (OCT) to image and quantify the effect of various corneal conditions, in terms of corneal, stromal and epithelial thickness, and light backscatter. To assess the changes ... -
Influence of Conjunctival Folds on Calculated Tear Meniscus Volume Along the Lower Eyelid
(Elsevier, 2016-05-03)Purpose: In calculating tear meniscus volume (TMV), tear meniscus height (TMH), radius (TMR) and cross-sectional area (TMA) are usually measured at the center of the lower lid margin, but lid-parallel conjunctival folds ... -
Infrared Imaging of Meibomian Glands and Evaluation of the Lipid Layer in Sjogren's Syndrome Patients and Nondry Eye Controls
(Association for Research in Vision and Ophthalmology, 2015-05-02)Purpose.: The purpose of this study was to evaluate meibomian gland dropout and lipid layer thickness (LLT) in patients with and without Sjögren's syndrome dry eye (SS). Methods.: We recruited 11 participants with SS ... -
Inhibition of Defocus-Induced Myopia in Chickens
(Association for Research in Vision and Ophthalmology, 2013-04-12)Purpose.: To determine the effect of wearing a lens with a unique peripheral optical design on the development and progression of defocus-induced myopia in newly hatched chickens.Methods.: Eighty-five newly hatched chickens ... -
Insights to Using Contact Lenses for Drug Delivery
(Omics International, 2013)There has been considerable interest in the potential application of contact lenses for ocular drug delivery. This short communication provides an overview of the challenges faced by delivering drugs using contact lenses, ... -
Interaction of Tear Inflammatory Markers with Contact Lens Materials
(University of Waterloo, 2020-01-28)Biomaterials are natural or synthetic materials that come into contact with biological tissue. Contact lenses are the most commonly used biomaterials, being worn by an estimated 140 million people worldwide. While contact ... -
Investigating the Effect of Mild TBI on the Global Processing of Form and Motion
(University of Waterloo, 2018-09-10)Purpose: Individuals with mild traumatic brain injury (TBI) often experience a range of visual symptoms. The cortical processing of visual information involves two parallel streams; the ventral stream (form perception) and ... -
Investigating The Impact of Multipurpose Solutions Released From Silicone Hydrogel Lenses on Corneal Epithelial Cells, in vitro
(University of Waterloo, 2010-01-22)Cytotoxicity of Multi-Purpose Solutions (MPS) is commonly tested on cells using diluted MPS or extracts from MPS soaked contact lenses. There is evidence that lens type will affect uptake and release of compounds contained ... -
An Investigation into the Effect of Increasing Target Size for Visual Sensitivity Measurement in Normals and in Early Glaucoma
(University of Waterloo, 2014-09-02)The clinical standard method of measurement for clinical visual sensitivity is currently Standard Automated Perimetry with a size III target (SAP III). However, there are many factors that can make the results unreliable. ... -
An investigation into the motivations, influences and expectations of students studying optometry in Canada and the United States of America
(University of Waterloo, 2021-04-01)Purpose: To investigate and compare the motivations, influences and expectations of Doctor of Optometry students studying in Canada and the United States of America. Methods: A survey was created, piloted, and conducted ... -
An investigation of interocular suppression with a global motion task
(University of Waterloo, 2012-10-31)Abstract Purpose: Interocular inhibitory interactions appear to underlie the establishment of ocular dominance. The inhibitory effect leads to suppression of the non dominant eye in certain conditions. While these ... -
The Investigation of Tear Film Osmolality as a Clinical Instrument Used in Assessments of the Tear Film and Dry Eye Disease
(University of Waterloo, 2010-01-11)Introduction: Tear film osmolality is a product of the varying concentrations of dissolved solutes (proteins, lipids and mucins) in the tear fluid. Research suggests that a hyperosmotic tear film is a trait common to ... -
Investigation of vision strategies used in a dynamic visual acuity task
(University of Waterloo, 2017-10-24)Purpose: Dynamic visual acuity (DVA), the ability to resolve fine details of a moving target, requires spatial resolution and accurate oculomotor control. Individuals who engage in activities in highly dynamic visual ... -
Investigations on the Reptilian Spectacle
(University of Waterloo, 2012-12-12)The eyes of snakes and most geckos, as well as a number of other disparate squamate taxa, are shielded beneath a layer of transparent integument referred to as the “reptilian spectacle.” Derived from the embryonic fusion ...